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Synthesis of epimers of ampicillin
Pharmaceutical Chemistry Journal, 19681. The potassium salts of N-[1-methyl-2-ethoxycarbonylvinyl]-D(−)-, L(+)-, and DL-α-aminophenylacetic acids were synthesized and their physicochemical properties were studied. 2. From the N-substituted D(−)-, L(+)-, and DL-isomers of α-aminophenylacetic acid were synthesized epimers of ampicillin, and their physicochemical and ...
G. S. Postnikova +2 more
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A Formal Synthesis of Porantheridine and an Epimer
The Journal of Organic Chemistry, 2009A formal synthesis of porantheridine and a synthesis of its C6-epimer have been completed, employing silver-catalyzed allene cyclization to form a common cis-isoxazolidine intermediate and related N-acyl iminium ion intermediates for side-chain introduction. The stereochemistry of this step can be controlled by choice of the N-protection method.
Roderick W, Bates, Yongna, Lu
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Synthesis of (–)-shyobunone and its epimers
J. Chem. Soc., Chem. Commun., 1979(–)-Shyobunone (10) and its epimers were synthesized from methylcyclobutene (1) and L-piperitone (2) in ca. 24% overall yield via irradiation followed by thermolysis of the reduced intermediate photoadduct (4).
John R. Williams, James F. Callahan
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Synthesis of epimer of Taniaphos ligand
Journal of Organometallic Chemistry, 2016Abstract The spatial arrangement of groups within a chiral ligand is essential for its catalytic performance. This work describes convenient synthesis of (R,Sp)-1-(2-(diphenylphosphano)ferrocenyl)-1-(2-diphenylphosphanophenyl)-N,N-dimethylmethanamine, a diastereomer of the well known (R,Rp)-Taniaphos ligand.
Ambroz Almássy +4 more
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Resolvin D1 and Its Aspirin-triggered 17R Epimer
Journal of Biological Chemistry, 2007Sungwhan F Oh +2 more
exaly